Sometimes one would be rolled diamond pattern instead of wallpaper a good alternative.
Unfortunately, such patterns with the roller can only difficult to process, as necessary to work extremely closely with the pattern repeat approach.
Because the exact approach is much easier to achieve with a stencil for a diamond shape, such patterns are usually stencilled.
Danke an:
Restaurator Christian Seiler, Eisenberg + Brehm Gedenkstätte Renthendorf